Acetic Acid → Formaldehyde;phenol

HRID 1277331Notes

Reaction equation

HRID 1277331 reaction equation
[CH:1]1[CH:2]=[CH:3][C:4]([OH:7])=[CH:5][CH:6]=1.C=O.[OH-].[Na+].C(O)(=O)C>O>[CH2:4]=[O:7].[CH:1]1[CH:2]=[CH:3][C:4]([OH:7])=[CH:5][CH:6]=1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 712FormaldehydeHCID 996PhenolHCID 14798Sodium Hydroxide

Product 1

HCID 172281Formaldehyde;phenol

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Procedure

Charged in a reaction vessel equipped with a reflux cooler, a pressure-reducing device and a stirrer, were 94 parts of carbolic acid, 162 parts of formalin (37% aqueous solution) and 30 parts of sodium hydroxide (10% aqueous solution). The temperature was elevated and the reaction carried out at 60° C. for 7 hours. Acetic acid was added to neutralize the reaction mixture and adjust the pH to 4 to 5 and dehydration was carried out under reduced pressure. The obtained resin washeated and, while being stirred, deionized water was gradually added to theresin to adjust the solid content to 50%, thus providing a water-soluble resol type phenolic resin (6) (the formalin/carbolic acid molar ratio was 2.0).

Workup

  1. additionCharged in a reaction vessel
  2. customequipped with a reflux cooler
  3. additionwas gradually added to theresin

Sources & evidence

ORD record
ord-99d33e453a114ae19a978b7f9a96a15c
Source dataset
uspto-grants-1981_07
Patent number
US04277383

Reaction notes

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